Locomotive.



No. 635,600. Patented Oct. 24, |899.

l E. sAnvEn.

LUCOMOTIVE.

\App1ic|.tion led 1m. 12, 1899.) (No Modal.)

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UNITED STATES PATENT OEEICE.

EDWARD SARVER, OF DEADIVOOD, SOUTH DAKOTA.

LocoMoTlvE.

SPECIFICATION forming part of Letters Patent No. 635,600, dated October 24, 1899.

Application filed. January l2, 1899. Serial No, 701,982. (No model.)

To a/ZZ whom it may concern:

Be it known that I, EDWARD SAEvER, a citizen of the United States, residing at Deadwood, in the county of Lawrence and State of South Dakota, haveinvented certain new and useful Improvements in Locomotives; and I do hereby declare the following to be a full, clear, and exact description of the invention, su ch as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to locomotive-engines.

In practice it has been found that the variation between the heat from the furnace when the engine is at work and when it is at rest has the eect of often cracking the sheets of the boiler and of loosening or affecting the tubes of the boiler. To overcome this difliculty, some furnaces of locomotives have been supplied with a stationary brick archor deiiecting-partition, so as to cause the heat and products of combustion to pass around and above said arch before they reach the flues of the boiler, the heat absorbed by the brick arch serving to maintain in some degree an approximately constant temperature on the sheets and tubes and preventing the burning of such parts of the engine. According to this plan the dificulty has only been partially remedied, and, moreover, whenever it became necessary to repair the sheets or tubes the arch had to be broken away and destroyed in order to obtain access to these parts, and after the repairs had taken place the arch had to be rebuilt.

In order to overcome the difficulties and objections to the known form of arch, and in order to further eliminate the difculties arising from the variations of heat at the tubesheet and tubes incident to the conditions arising from a state of active operation or rest, I have combined with the fire-box or furnace of a locomotive-engine a movable arch or partition adapted to be held in the ordinary working position and adapted to be swung up against the tube-sheet when the i "engine is at rest to hold or maintain the temperature of the Jfurnace nent the sheet and tubes and to prevent draft through the tube :and also adapted to be swung or dropped down upon the grate whenever work may be necessary on the sheet or tubes to repair the same.

. My invention consists in the combination, with the nre-bon of a locomotive-engine, of a movable or adjustable arch for the purpose indicated.

The invention also consists in other combinations, hereinafter described, ancillary to and for the purpose of making effective the main part of my invention.

In the drawings formingapart of this speciiication, Figure l is a broken section through a locomotive-boiler and fire-box, illustrating my invention and the manner in which it is applied. Fig. 2 is a plan'or top view of the movable arch or partition.

l is the fire-box or combustion-chamber of a locomotive-engine. 2 is the grate-bars. 3 is the tube-sheet, and 4 I are the tubes. All of these parts may be of conventional character. To the forward lower part of the ire box I pivot a metallic frame 5, which is protected from burning or overheating by asbestosorothernon-conductingcovering. The frame is filled in with tire-brick G, so as to provide a fireproof arch or defiecting-partition which when the engine is in operation or in its normal working condition stands at an angle, as shown in full lines in the drawings. NVhen the engine is at rest, the arch will be swung against the tube-sheet, as shown in dotted lines, and when repairs are to be made to the sheet or tubes the arch will be dropped down onto the grate, also as shown in dotted lines in the drawings. The heat which has been absorbed by the arch when the engine is at work serves to keep the sheet and ends of the tubes at a substantially constant temperature, notwithstanding the engine is at rest, by giving off its accumulated heat and also by preventing draft through the tubes.Y

The frame 5 is conveniently pivoted to studs or pintles 7, passing through or fastened to the side of the sheets of the furnace. One side of the frame projects beyond the main body of the frame to form a lever 8, through which the arch may be adjusted in any one of its proper positions. This is accomplished by means of a rod 9, connected with a lever 10, connected with the back corner of the nre-box water-leg. Alongside this lever l0 is IOS a quadrant 1l, provided with notches for holding the lever in either one of its adjusted positions. The upper end of the lever 1 0 is provided with a socket to receive the grate-shak ing lever used to tip or shake the furnacegrates. When the arch is against the tubesheet, there will be short rows of fines uncovered at the top on opposite sides of the arch. These short rows of ues will have sufficient capacity for the escape of products of combustion While the engine is at rest.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a locomotive firebox, of an arch or partition movable so that it may be adjusted in contact with the tubesheet of the locomotive-boiler or at any point between the tube-sheet and the grate of the furnace, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD SARVER.

Witnesses:

FRANK MORAVIK, STEVE DURNIN 

